Lined moisture-proof carton and method of making same



Feb. 20, 1934. 1,947,664

LINED MOISTUREPRooF CARTON AND METHOD oF MAKING SAME E. G. STAUDE 2 sheets-sheet 1 Filed Aug. 27, 19.31

E, G. STAUDE Feb. 20, 1934.

LINE) MOISTUREPROOF CARTON AND METHOD OF` MAKING SAME Filed Aug. 27, 1931 2 Sheets-Sheet 2 Patented Feb. 2o, 1934 i PATENT OFFICE LINED MOISTURE-PROOF CARTON AND METHOD F MAKING SADIE Edwin G. Staude, Minneapolis, Minn. Application August 27, 1931. Serial No. 559,649

12 Claims.

This invention relates to improvements in moisture-proof cartons or folding boxes, and methods of making, and contemplates the lining of the inside of the carton with moisture-proof l material (generally cellulosic material) in such a manner that separate side wall glue yseams are provided respectively for the liner, andfor the carton proper.

The transparent moisture-proof cellulose material possesses a surface which has no aflinity for ordinary adhesives, and for that reason adhesives specially prepared, which contain a rubber cement solution, or combinations of other elements of a similar nature, are necessary to securely cement the cellulose material to itself.

Such adhesives, however, are -unt for gluing the l side walls of cartons or paper boxes.

One of the primary objects of the present invention is to unfailingly obtain adhesive sealing contact of the moisture-proof inner liner to itself, and also to unfailingly obtain similar sealing contact for the carton or folding box, both operations being capable of accomplishment in rapid succession on existing machines of conventional design. An important object is to prevent the liner material from being interposed between the glue seam of the box blank, to interfere with proper adhesive contact. A particular object is to treat the side seam only.

Objects, features and advantages of the invention will appear from the description of the drawings, forming a part of this application, and in said drawings Figure 1 Ashows a perspective view of an open blank, to the inside of which the transparent moisture-proof cellulose material has been secured by suitable adhesive;

Figure 2 is a section on line 2-2 of Figure 1, showing the cellulose material extending beyond one edge of the carton blank to permit the use of folding mechanism of conventional machines, to engage the outer edge of the transparent material and fold same over on the crease line without acting on the carton flap;

5 Figure 3 shows a perspective of the blank in which the transparent moisture-proof cellulose material has been folded over upon itself, leaving the blank carton flap in the flat ready to be acted upon by a second folding mechanism; j

Figur'e'4 is a section on line 4 4 of Figure 3; Figure 5 is a diagrammatic plan View illustrating the method of folding which can be accomplished on any one the box carton gluing machines described in my Patents No. 1,104,013,

1,123,945 and 1,671,790; and

Figure is a cross-section on line 6-6 of Figure 5 showing the product resultant from the method, and illustrating the folded relationship of the inner liner with respect to the carton, the view being somewhat diagrammatic for the purposes of clearness.

The blank as shown in Figure 1, is rst prepared by feeding through the machine described in my application Serial Number 492,441. This machine applies adhesive to the inside of the blank at the points 1, 2, 3, 4 and 5, as it travels through the machine. The transparent moisture-proof cellulose material is fed into register with the carton in timedI relationship, and cut off. The sheet is of such width that a portion 6 projects beyond the edge ofthe blank on the side of the blank that is opposite the carton glue flap '7.

The adhesive used, in this instance, is of the type adapted for cementing moisture-proof cellulose material, and is sufficiently tacky" to cause the moisture-proof material to adhere to the boxboard. Because this cement is slow drying, it is impractical to use it for securing the glue flap 7 to the opposite wall or panel 8 of the carton blank to form the tubular knock-down container.

In order that the glue, which is applied as at 'lato the carton, may after folding over be unfailingly engaged or registered with the panel 8, and in order that the moisture-proof material may not engage this glued portion, the transparent material is not secured to the flap or panel 8 but is left loose so that it can be folded over as shown in the drawing by a suitable folding mechanism indicated at 15, and which is a folding rod attachableto any of the machines of the types before mentioned.

The strip of glue 5, see Figure 1, may be placed as shown adjacent the carton fold line and may determine the fold line of the portion 9 of the flap of the cellulose material, but, of course, in addition thereto, the fold is determined by the location of the hold-down bars in the folding machine over which the fold is formed. As the blank passes through the machine, the carton is folded on the crease lines 10 and 11. The blank having first been prepared in the manner just describedt is then fed in rapid succession through a gluing and folding mechanism, as shown in Figure '5. In this figure, all

mechanical connections have been omitted for at 12. This glue wheel is preferably supplied With carton adhesive of the type spoken of in my Patent No. 1,127,538, and the wheel is adapted to apply adhesive to the under side of the glue flap 7 as at 7-, As-the blank advances, a second glue wheel 13 applies glue to the upper side of the liner as at 14. This glue Wheel is supplied with adhesive by a mechanism-similar to that described in my Patent No. 1,193,628, or similar to that shown in my application, Serial Number 492,441.

For the purpose of clearness, I have not shown any advancing means for the blank, but it is understood that any, suitable construction well known for this purposemay be employed. As soon as the flap 7 has `received glue from the glue wheel 12, and after application of the special transparent moisture-proof cellulose-adhesive, by wheel 13, the flap 9 engages a curved folder bar 15. The `,outer edge 6 of the flap 9 first engages the bar. The flap is lifted as shown at position B, Figure 5, and is finally folded over as shown at position C, which completes the operation of folding a terminal portion of the liner down upon itself.

Other folding elements 16 and 17 now engage the carton blank. The folder 17 is timed and adjusted so that its action is a little in advance of the folder 16, which is common practice. Flap 18 is then folded upon the top of the folded down nap 9, so that the moisture-proof cement 14 engages the folded portion at the point 19, thus cementing the transparent lmoisture-proof cellulose material to itself, by a strong continuous cemented seam which is water-tight.

During continued movement of the blank from the position D to yE, the nap 8 is folded over and down on the flap 18, and on adhesive 7a,

completing the formation of the tubular carton.

In the drawings, the transparent moistureproof material covers the entire blank, except the' glue flap 7, the slots 20 being cut in the carton or folding box blank only, and liner material overlying these slots.

It is, of course, understood that I do not mean to limit the invention to use with any particular form of box, nor to only one operative sequence.

While I have shown a transparent moistureproof cellulose material as secured to the box blank by a series of glue lines 1, 2, 3, 4 and 5, it is also clearithat the manner of cementing the cellulose material to the boxboard may be Varied as conditions require without departing from the spirit of the invention.

A very important object of this invention is to so arrange the liner with reference to the terminal side 8 that the liner can be engaged by the folding element 15 or its equivalent, and be folded over as shown at C, in Figure 5, so that the flap 8 so that it can prelimnarily engage the element .15 as the blank is fed, and in the manner shown at A in Figure 5'. It will be noted that by this means.' the liner portion 9 is engaged independently of the terminal side 8. and

it will be further noted that this liner-folding operation of the part 9 of the liner precedes that of the folding of the element 8. The beginning of the folding operation of element 8 is shown at C in Figure 5, and it will be noted that this operation does not take place until the adhesive 14 is in proper contact with the element 9 and until the adhesive 7a is positioned for adhesive registration with the side 8.

It is noted that two different kinds of glues are used, one for gluing the paper and one for gluing the moisture-proof celophane (as distinguished from paramn paper). One is a quickdrying adhesive for -the flap, and the other a non-drying or slower drying adhesive for the liner.

Moreoverjthe cellophane is much thinner than paraffin paper and it cannot be laid or run over a glue wheel without bowing into the groove of the usual grooved flap wheel. In the present invention what may be called the flap-glue is, therefore, applied to the outer surface of the cellophane at a point where it is supported by thecarton, the carton thus acting for or in substitution of a flap wheel. This is a valuable feature. i

Moreover, in this device, the pre-folding of the unglued flap portion which projects beyond the carton results in less liner wrinkling. Wrinkling ordinarily takes place because the length of the inside perimeter ofthe box is lessened. When the liner is adhesively attached throughout its entire surface to the carton, considerably more wrinkling therefore takes place.

It is further noted that the flap glue is applied to the nap at the outside of the flap and that the liner glue is applied to the'inner surface of the liner adjacent that same nap. The liner at the opposite side of the blank is not attached to the terminal panel and extends byond M5 the blank and is foldable so that its outersurface is positioned to be engaged by the adhesive which has been applied to the inner surface of the liner adjacent that flap to the outer surface of which adhesivel has been applied.

I claim as my invention:

1. A process for lining a foldable box blank which includes a separate glue seam for the blank and a separate glue seam for the liner, which consists in applying the liner to the blank and in havingv the liner material project beyond the blank on the side opposite that to which the adhesive is applied to condition it to be engaged and folded independently of the corresponding side of the blank, and first folding the projecting side of the liner upon itself, then folding the blank and liner to bring the liner glue seam into adhesive contact with the folded-over portion of the liner, and then bringing the blank into adhesive contact with the adhesive of the blank.

2. A process for lining a foldable box blank which includes a separate glue seam for the blank and a separate glue seam for the liner, which consists in covering the blank with the liner and having the liner material project beyond the blank on the side oposite that to which the adhesive is applied, conditioning it to be engaged and folded independently of the corresponding side of the blank, and rst folding the projecting side of the liner upon itself, then folding the blank and liner to bring the liner glue seam into adhesive contact with the folded-over portion of the liner, and then bringing the blank into adhesive contact with the blank glue seam.

3. A process for lining a. foldable box blank .sive contact with the which includes a separate glue seam. for the blank and a separate glue seam for the liner, which consists in covering the blank with the liner and adhesively securing the liner to the blank,' and in having the liner material project beyond the blank on the side opposite that to which the adhesive is applied, to condition it to be engaged and folded independently of the corresponding side of the blank, and rst folding the projecting side of the liner upon itself, then folding the blank and liner to bring the liner glue seam into adhesive contact with the folded-over portion of the liner and then bringing the blank into adhesive contact with the adhesive of the blank.

4. A process for lining a foldable box blank which includes first and second terminal sides, the rst having a glue flap adapted to register with the second side when the blank is folded, which consists in applying the liner to the inner face of the blank, and having the material project beyond the second terminal side to adapt it to be engaged and folded independently of that side, applying adhesive to the glue flap on that face opposite the lined face, and to the exposed face of the liner, folding that portion of the liner adjacent the second terminal side upon the adjacent portion of the liner, folding the blank and liner to bring the glued portion of the liner into adhesive contact to the folded-over portion of the liner, and then bringing the second terminal side in adhesive contact with the glue of said flap.

5. The process for lining a foldable box blank, which includes lfirst and second terminal sides, the first having a glue flap adapted to register with the second side when the blank is folded, which consists in covering the inner face of the blank with liner material and having the material project beyond the second terminal side to adapt it to be folded independently of that side, applying adhesive to the glue flap on that face opposite the lined face, and applying adhesive to the exposed face of the liner adjacent the glue flap, folding that portion of the liner adjacent the second terminal side'upon the adjacent. portion of the liner, then folding the blank and liner to bring the glued portion of the liner into adhesive contact with the folded-over portion of the liner, and to position the glued blank flap for adhesecond terminal side, and then bringing the second terminal side into adhesive contact with the glue of said flap.

6. A process for lining a foldable box blank which includes a terminal glue flap and a'terminal side adapted to register with the glue flap when the blank is folded, which consists in covering the inner face of the blank with liner material and having the material project beyond the terminal side to adapt it to be folded independently of that side, applying adhesive to the glue flap on that face opposite the lined face and applying adhesive to the exposed face of the liner adjacent the glue flap, folding that portion of the liner adjacent the terminal side upon the adjacent portion of the liner, then folding the blank and liner to bring the glued portion of the liner into adhesive contact with the folded-over portion of the liner, and to position the glued` blank flap for adhesive contact with the terminal side, and then bringing the said terminal side into adhesive contact with the glue of said flap. v ,Y

1. A process for lining, a foldable box blank which includes a terminal glue flap and a terminal side adapted to register with the glue flap when the blank is folded, which consists in covering the inner face of the blank with liner material and having the material project beyond the terminal side to adapt it to be folded independently of that side, applying adhesive to the glue flap on that face opposite the lined face and applying adhesive to the exposed face of the liner, folding that portion of the liner adjacent the terminal side uponthe adjacent portion of the liner, then folding the blank and liner to bring the glued portion of the liner into adhesive contact with the folded over portion of the liner, and then bringing the said terminal side into adhesive contact with the glue of said flap.

8. A process for lining, a foldable box blank which includes a terminal glue fiap and a terminal side adapted to register With the glue flap whenthe blank is folded, which consists in covering the inner face of the blank with liner material and having the material lproject beyond the terminal side, applying adhesive to the glue flap on that face opposite the lined face and applying adhesive to the exposed face of the liner, folding that portion of the liner adjacent the terminal side upon itself, then folding the blank and liner to bring the glued portion of the liner into adhesive contact with the folded over portion of the liner, and then bringing the said terminal side into adhesive contact With the glue of said flap.

9. A process for lining a foldable box blank which includes panels, one of which has a terminal glue fiap, said blank having a terminal panel opposite that having the glue flap and which is adapted to register` with the glue flap when the blank is folded, which consists in securing the liner material to the inner face of the blank by strips of glue which lie intermediately of the panels, 'and causing the liner to be so laid as to expose the inner surface of the carbon fiap, and so as to have, the liner project beyond but not attached to said opposite terminal panel to adapt it to be folded upon itself independently of that side, applying adhesive to the outer face of the glue flap and applying adhesive to the inner face of the liner adjacent said flap, folding the projecting portion of the liner inwardly upon its adjacent portion, folding the blank and liner to bring the glued portion of the liner into adhesive contact with the folded-over portion and then bringing said terminal side into adhesive contact with the glue of said flap.

10. A foldable box blank having sides or`panels defined by fold lines, including first and second opposite terminal panels, the rst having a glue ap to the outer surface of which glue is to be applied, a liner attached to the inner face of the blank and having a portion unattached to the blank and having a portion of that portion projecting beyond the second terminal side to position it for engagement by' a folding instrumentality to be folded independently of that side and in advance of the folding of that side.

11. A foldable box blank having sides or panels defined .by fold lines including first and second terminal panels, the first having a glue flap the outer face of which is adapted to receive glue, and a liner adhesively attached to the blank but not to the glue flap and adapted -to have glue applied to its inner face at a point adjacent said flap and having a portion opposed but not attached to the second terminal panel and projecting therebeyond, to adapt it to be engaged by a folding instrumentality and to be folded independently of that panel and in advance thereof.

12. A foldable box blank having sides or panels defined by parallel fold lines, including first and 15.0

jacent the bend line of the second terminal panel but not to that panel, and to each of the remaining panels of the blank intermediate the fold lines dening those panels, said adhesive means having the form of narrow strips substantially parallel with and between the fold lines.

' EDWEN G. STAUDE. 

